Paving-block



(No Model.) 2 Sheets-Sheet 1.

L. B. SAWYER.

PAVING BLOCK. N0. 360,364. Patented Mar. 29, 1887.

- c A b c A b e a c 1 1 159.11. Fag 2 3 7 r 2 liwewlor /Zw4/@ LenuwLB.Sa/w,yr, wmam,@wm 3M 2 Sheets- Sheet 2.

(No Model.)

L. B. SAWYER.

PAVING BLOCK.

No. 860,364. Patented Mar. 29, 1887.

liwenlor: liemuelfi. Sawyen minesses: M /a 55m M sz wxwe .flilomwy.

wwzmwmb UNITED STATES PATENT OFFICE.

LEMUEL B. SAl/VYER, OF BOSTON, MASSACHUSETTS.

PAVING- BLOCK.

SPECIPICATION forming part of Letters Patent No. 360,364, dated March 29, 1857,

Application filed July 3,1866. Serial No. 207,030.

Boston, (Jamaica Plain,) in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Paving-Blocks, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to paving-blocks; and it consists in certain novel features of construction, arrangement, and combination of parts,

which will be best understood by reference to the description of the drawings, and to the claims to be hereinafter given.

Figure 1 of the drawings is a side elevation of my improved paving-block. end view of the same. Fig. 3 is a plan of the metal portion of the block before being filled with concrete. Fig. I is a longitudinal vertical section on line 1 1 on Fig. 3. Fig. 5 is a transverse section on line 2 2 on Fig. 3. Fig. 6 is a transverse section on line 3 3 on Fig. 3, but showing the concrete filling in the center of the block. Fig. 7 is a transverse section through a portion of the metallic shell of the block, on line 4 4 on Fig. 3, andlooking toward the top of said figure,or on line 5 5 on thesame figure and looking toward the left of said fig ure. Fig. 8 is a similar section on line 6 6 on Fig. 3, looking toward the top of said figure, or on line 7 7 on the same figure and looking toward the left of said figure. Fig. 9 is a vertical transverse section on line 8 8 on Fig. 3, looking toward the top of said figure. Fig. 10 is a perspective view of a small section of pavement composed of aseries of my improved paving-blocks, and Fig. 11 is a plan of a modified form of my improved paving-block.

In the drawings, A is the outer shell of the paving-block, made of cast-iron, of substantially uniform thickness, except that its upper and lower outside corners are beveled, as shown at a a.

Each side and end of the iron shell A is provided with two rectangular projections, bbor c 0, each covering nearly onequarter of the area of said side or end, the two projections upon anyone side or end beingarranged upon the quarters of said side or end diagonally opposite to each other, theprojections upon both Fig. 2 is an (No model.)

sides and both ends of the same block beingarranged in the same mannerthat is, in pairs with the two projections of each pair occupying the same relative position upon the side or end of the block that the two projections of 5 5 any other pair occupy.

The inner surface of the shell Alias formed therein recesses opposite the projections upon the exterior surfaces of the block, thus forming shoulders (I d d d, which serve to hold the concrete filling B in place within the shell when packed and hardened therein.

In order to properly break joints in laying the pavement, as illustrated in Fig. 10, it is necessary that the blocks shall be made rights and lofts-that is, one set having the projecting portions on the upper left hand and lower right-handportions of the sides and ends, and the other set having the projecting portions upon the upper right hand and lower lefthand portions of the sides and ends. By this construction a very firm, even, durable, and comparatively noiseless pavement that can easily be reversed when badly worn upon one side is produced, and which presents a good foothold for horses drawing heavy loads, and by virtue of the interlocking of the sides and ends of the blocks with each other, the pressure of the heavily-loaded wheel is distributed overa considerable area, for the reason that each block hasadirect and firm bearing upon four other blocks, and indirectly through said four blocks upon several others.

The beveled outer corners of the cast-iron shells, when the blocks are laid in the street, as shown in Fig. 10, form grooves, which assist the horses to obtain a foothold when drawing heavy loads. These blocks are made of a depth about equal to their width, and may have a single opening through the same, to be filled with concrete or any other suitable filling, or said opening may be divided into two by a partition extending longitudinally of the block, as shown in Fig. 11.

\Vhat I claim as new, and desire to secure by Letters Patent of the United States, is

l. A metallic paving-block provided upon two sides and each end with two rectangular projections occupying diagonally-opposite cormore of the block and each covering about onequarter of thearea of a side or end, with their inner corners inclose proximity to each other, substantially as shown and described.

2. A metallic paving-block provided upontwo sides and each end with two rectangular projections occupying diagonally-opposite corners of the block and each covering about onequarter of the area of a side or end,with their inner corners in close proximity to each other, the outer corners of said block at the topand bottom being beveled, substantially as and for the purposes described.

3. A paving-blockcornposed of a metallic shell having each of its outer sides and ends provided with two rectangular projections occnpying diagonally -opposite corners of the shell and each covering about one-quarter of Witnesses:

CHARLES K. STEARNs, WALTER E. LOMBARD. 

